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Intangible Assets - Balances of goodwill (Parenthetical) (Detail) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of reconciliation of changes in goodwill [line items]    
Goodwill R$ 818,096 R$ 931,808
Parent Company [Member]    
Disclosure of reconciliation of changes in goodwill [line items]    
Goodwill R$ 246,163